EP3065498B1 - Procédé et système d'établissement d'une communication de données entre une entité mobile et internet - Google Patents

Procédé et système d'établissement d'une communication de données entre une entité mobile et internet Download PDF

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Publication number
EP3065498B1
EP3065498B1 EP15157585.9A EP15157585A EP3065498B1 EP 3065498 B1 EP3065498 B1 EP 3065498B1 EP 15157585 A EP15157585 A EP 15157585A EP 3065498 B1 EP3065498 B1 EP 3065498B1
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Prior art keywords
access point
data communication
ssid
mobile
mobile entity
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German (de)
English (en)
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EP3065498A1 (fr
Inventor
Walter Bindrim
Antonio Carlos Correia Fernandes
Nick Burmester
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Vodafone GmbH
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Vodafone GmbH
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to a method of establishing a data communication between a mobile entity and the internet via a Wi-Fi access point with a mobile network backhaul.
  • the invention is further related to a network system comprising a respective mobile network for backhauling of a Wi-Fi access point.
  • Wi-Fi hotspots mobile devices, for example, mobile entities in the form of mobile telephones can be used as so-called Wi-Fi hotspots.
  • a Wi-Fi hotspot with a mobile network backhaul can be used in a much more mobile manner. Due to the fact that the mobile network backhauling provides the possibility to freely locate the Wi-Fi access point, a specific communication procedure has to be carried out to ensure safe and secure internet connection.
  • a mobile entity selects a Wi-Fi access point and requests connection to the internet. This request is carried out by a data communication, which is forwarded from the Wi-Fi access point to the mobile network of the backhauling step. The data communication is further processed in the mobile network by different gateways.
  • a service gateway and a packet data network gateway are used.
  • several steps for example, for identification of the mobile entity or for identification of the sort of data communication is necessary.
  • a mobile device connected via untrusted WiFi wants a termination into the mobile packet core additional functions are required. In common known procedures, this is carried out in a separate enhanced packet data gateway (ePDG).
  • the ePDG will be therefore the endpoint of a secure tunnel from the mobile device into the mobile packet core. After this the ePDG will establish a standard mobile tunnel towards the PGW. If a mobile device is offering a Wi-Fi access point it supports backhauling of the WiFi traffic into the mobile packet core via the SGW and the PGW.
  • the ePDG is used.
  • PGW packet data network gateway
  • an internet connection is necessary.
  • the data communication is forwarded via the internet from the PGW to the ePDG and after the respective specific steps have been carried out in the ePDG, the same data communication has to be sent back to the PGW. Therefore, the PGW is touched twice during that procedure and an internet communication has to be carried out in both directions before the final internet connection can be established.
  • US 2013/0294327 describes in general the respective technical background.
  • the traffic touching the internet is intensively increased.
  • the data communication is communicated three times to the internet, namely two times from the PGW to the PDG and back and the third time from the PGW to the internet. Beside the additional traffic, this could lead to time delays and so-called jitter problems, which all are recognizable from the user of the mobile entity as a reduced quality of service (QoS).
  • QoS quality of service
  • the data communication is correlated to a time critical service, for example, a streaming of a video or an audio source or a voice over IP communication, such reduction in quality of service is not acceptable for the user of a mobile entity.
  • a method for establishing a data communication between a mobile entity and the internet via a Wi-Fi access point with a mobile network backhaul comprises the following steps:
  • PePDG PDN evolved packet data gateway
  • PDN evolved packet data gateway PDN evolved packet data gateway
  • One further advantage is that the data communication is transmitted from the SGW directly to the PePDG after the respective steps of identification has been carried out inside of the PePDG.. This leads also to reduced traffic inside of the mobile network and thereby also increasing quality of service for the user of the mobile entity.
  • Directly forwarding would be a direct connection between the PePDG and the internet.
  • additional steps can be carried out for an indirect connection to the internet.
  • the data communication can be forwarded from the PePDG to a PGW and from there past on to the internet.
  • the use of several identification services a so-called AAA or HSS service, can be used for a further identification step in particular as to collecting information about usage and accounting of the user of the mobile entity.
  • the Wi-Fi access point for example, can be configured to be a mobile phone, working as a hotspot.
  • a mobile phone can also be labelled as a so-called My-Fi device. This leads to a situation where one or even more other mobile entities can connect to the internet by using such a mobile phone as a hotspot in form of a Wi-Fi access point.
  • a further use could be a Wi-Fi access point, which is configured to be located in a car. Inside a car several users with own mobile entities, for example, tablet PCs, laptops or even other mobile phones can be located. Each of those users can try to get a connection to the internet via one single Wi-Fi access point. Due to the fact that according to the present invention the traffic is reduced massively, even if two or more mobile entities try to connect to the internet in a timely parallel manner, the reduction of traffic leads to a high quality of service for all data communication from several mobile entities via one common Wi-Fi access point.
  • the reduced traffic is in particular achieved by offering a shortcut for specific situations.
  • a specific situation is established when the mobile entity is selecting a specific service set identification.
  • the term service set identification is to be understood in particular as the name of the Wi-Fi access point, which appears to be selected on a mobile entity.
  • one Wi-Fi access point can offer two or even more different service set identifications (SSID) for one single Wi-Fi access point.
  • SSID service set identification
  • the user selects one connection method, which is correlated with that specific SSID. Therefore, for example, the customer of a specific network company is choosing a specific value added service SSID (VAS-SSID), which is correlated on one hand with the Wi-Fi access point and on the other hand with his provider of the mobile network.
  • VAS-SSID specific value added service SSID
  • a correlation can be carried out inside of the Wi-Fi access point. Due to that correlation, the Wi-Fi access point has different possibilities to forward the data communication to the mobile network, in particular via the SGW. That forwarding step of the data communication is carried out after correlating the selected SSID with a respective specific access point name (APN). This has to be understood as intelligence, which is carried out inside the Wi-Fi access point.
  • the correlation leads to a specific forwarding information based on the APN. Therefore, the SGW, receiving the data communication from the Wi-Fi access point, gets some further information. This further information contains the selected APN, which is once more specific for the selected SSID. Based on that selection, the SGW can work in a specific manner on that selection and therefore passing on the data communication to the PePDG only in the case of a specific SSID selection and the respective forward communication based on a specific APN.
  • the data communication is established in the form a security critical communication and/or in the form of a time critical communication, in particular in the form of a voice over IP communication.
  • a security critical communication and/or in the form of a time critical communication, in particular in the form of a voice over IP communication.
  • time critical data communication for example, audio or video streaming
  • the present inventive method offers its increased quality of service in particular for that time critical solutions.
  • the service gateway comprises a list of forwarding information based on the APN.
  • a respective list offers the information what to do with the data communication received from a Wi-Fi access point.
  • that list comprises, for example, a whitelist and/or a blacklist and/or a complete list of possible APNs.
  • the SGW can select how to proceed. In particular, this selection is carried out to proceed according to the present invention and to use the shortcut to the PePDG according to the present inventive method.
  • the method is characterized in that the step of connecting the mobile entity to the Wi-Fi access point by selecting the value added service set identification (VAS-SSID) of the Wi-Fi access point is carried out automatically by the mobile entity.
  • VAS-SSID value added service set identification
  • the mobile entity comprises information of the respective network provider. If the network provider of the mobile entity is identical or correlated, for example, in the case of a roaming scenario, to the provider of the mobile network of the backhauling of the Wi-Fi access point, an automatically carried out selection of the SSID can be carried out.
  • the mobile entity can recognize the provider of the backhauling network and therefore selects automatically the VAS-SSID to carry out the inventive method. This leads to reduced manual support from the user of the mobile entity and provides the advantage of the present invention to more customers.
  • the step of connecting the mobile entity to the Wi-Fi access point by selecting a value added service set identification of the Wi-Fi access point is carried out manually in form of a selection of the user at the mobile entity.
  • This step can be carried out alternatively or additionally to the solution descripted above.
  • a manual selection offers more flexibility of the user.
  • such manual selection could be of high advantages.
  • one further advantage is the reduction of complexity for the selection step of the inventive method.
  • the data communication is forwarded from the PDN evolved packet gateway (PePDG) to an identification server to identify the mobile entity and/or the user of the mobile entity.
  • PePDG PDN evolved packet gateway
  • Such forwarding can be carried out directly from the PePDG or indirectly via, for example, a PGW.
  • the identification server can comprise the commonly known AAA servers or HSS servers to offer seamless identification.
  • An identification for example can be carried out based on the MSISDN numbers, the IMSI numbers or some specific mobile entity numbers. Seamless identification leads just to the possibility to correlate traffic, which is generated by the data communication to the specific user of the mobile entity and not only to the user of the Wi-Fi access point.
  • a user of a mobile entity sitting in the car of a friend can now use the Wi-Fi access point of his friend by the way of being accounted from the mobile network based on his own customer contract with that mobile network company. This is only possible due to the fact that an identification step is carried out to identify not only the Wi-Fi access point but further identify the mobile entity and the respective user.
  • the Wi-Fi access point offers at least one additional service set identification, in particular at least one of the following:
  • one Wi-Fi access point can offer in that case two, three or even more different SSIDs. Therefore, for each SSID a specific APN is correlated. For example, a VAS-APN is correlated with a VAS-SSID, a C-APN is correlated with a C-SSID as well as an I-APN is correlated with the I-SSID. Further SSIDs for further clients are also possible according to the present invention. Each of the SSID, for example, can modify slightly the inventive method, which is described later in more detail.
  • users of the Wi-Fi access point which are not customers of the mobile network company backhauling the Wi-Fi access point, can use that Wi-Fi access point by specific and separate accounting.
  • the mobile entity with the respective data communication can be forwarded to an internet portal offering an accounting solution for charging the data communication directly to the mobile entity and the respective user and not charging the owner of the Wi-Fi access point.
  • the user of the mobile entity can enter his credit card number into that portal and thereby use the Wi-Fi access point for his own data communication and being charged himself and not the owner of the Wi-Fi access point.
  • the method is characterized in that the data communication is forwarded from the PDN evolved packet data gateway and/or from a packet network gateway (PGW) to a specific identification server to identify the mobile entity and/or the user of the mobile entity based on the selected service set identification.
  • PGW packet network gateway
  • a separate user who does not own the Wi-Fi access point, wants to carry out data communication to the internet via the Wi-Fi access point.
  • a separate billing is possible as well as a separate responsibility structure based on the content of the carried out data communication. All that distinction between different mobile entities, different method alternatives and different users of the Wi-Fi access point is carried out by the selection of specific SSIDs and a correlation with specific APNs in side of the Wi-Fi access point.
  • the method is characterized in that the Wi-Fi access point is continuously connected to the mobile network.
  • This is a so-called always-on hotspot for the Wi-Fi access point. It is always connected to the internet via the mobile network backhaul and thereby can provide a continuous service for data communication.
  • This is in particular of advantage in situations where energy is no problem. For example, if the Wi-Fi access point is established inside of a car, it can be used in an always-online solution as long as the car is turned on and the motor is running. Additional an extension of a Small Cell including WiFi at a lamp site could use the mobile Network for backhauling.
  • the method is characterized in that the Wi-Fi access point connects to the mobile network on demand after a mobile entity has connected to the Wi-Fi access point. This leads to a specific reduction of the network connectivity and in particular to a reduction of energy consumption of the Wi-Fi access point. In contrast to the always-online solution, this solution can be called the on-demand solution.
  • a further aspect of the present invention is offered by a network system comprising a mobile network for backhauling of a Wi-Fi access point, in particular under the use of an inventive method.
  • the mobile network comprises a serving gateway (SGW) for receiving a data communication from the Wi-Fi access point as well as a PDN evolved packet data gateway (PePDG) in direct communication with the serving gateway (SGW).
  • SGW serving gateway
  • PePDG PDN evolved packet data gateway
  • the data communication can be received directly from the serving gateway to forward the data communication to the PGW or in case of offloading direct towards the internet.
  • the inventive network system can provide the same advantages, which have been discussed in detail as to the inventive method.
  • a Wi-Fi access point AP is located inside of a car.
  • the Wi-Fi access point AP comprises two antennas.
  • the lower right antenna is connected to the mobile network 100, for example, in an on-demand solution or an always-on solution. This antenna is used for backhauling the WiFi traffic.
  • a second antenna at the upper left of the Wi-Fi access point AP offers in this case three different SSIDs, namely the VAS-SSID, the C-SSID and the I-SSID.
  • a mobile entity 10 in form of a mobile phone is located inside of that respective car.
  • the mobile entity 10 connects to the Wi-Fi access point AP by selecting one specific SSID.
  • the VAS-SSID is selected and a data communication 20 is forwarded to the Wi-Fi access point AP.
  • the data communication 20 is forwarded from the Wi-Fi access point AP into the mobile network 100 over, for example, a 3G, or a LTE mobile network 100.
  • the serving gateway SGW After having received the data communication 20 inside the mobile network 100 it is passed on to a serving gateway SGW, which can now decide what to do with the data communication 20. This decision is carried out by recognizing the sender of the data communication 20, namely the Wi-Fi access point AP.
  • the Wi-Fi access point AP comprises specific access point namely APN, which are precisely specific on the selected SSID. Based on that specific APN, the serving gateway SGW can now select two different ways to forward the data communication 20. If the selected SSID was the C-SSID or the I-SSID, the SGW can carry out in the commonly known way and forward the data communication 20 directly to a packet data network gateway PGW and from there to the internet 200 or any other solutions.
  • the mobile entity 10 selected the VAS-SSID and therefore, the Wi-Fi access point AP provides the data communication 20 to the SGW under the use of a specific VAS-APN. Therefore, the SGW can now use that information to use a shortcut for the data communication 20 to a PDN evolved packet data gateway PePDG.
  • the SGW can comprise a respective list of forwarding information, which can be a whitelist, a blacklist or even a complete list of possibilities. That list can be stored inside the SGW or, for example, can be located on a server 110 outside the SGW, which can be requested in the specific case of data communication 20.
  • the data communication 20 is processed further in the PePDG and then forwarded directly to the internet 200 or in the case of fig. 4 indirectly under passing the PGW.
  • Aforesaid description can be a general data communication 20 or in particular a time critical data communication 20, which can take the form of a voice over IP communication or an audio or video streaming situation.
  • Fig. 5 shows a situation where two different mobile entities 10 are located in the same car.
  • the lower mobile entity 10 is a non-customer of the network provider of the mobile network 100.
  • the VAS-SSID is not possible to be used by the mobile entity 10 and therefore, this mobile entity 10 now selects the I-SSID to connect to the internet 200 without added value services.
  • the information and the data communication 20 are passed on in generally in the same manner, which has been discussed in detail to figs. 1 and 4 .
  • the information of the I-APN based on the I-SSID is now causing the SGW to forward the data communication to the PGW and from there making a contact over the internet 200 to a not shown PDG to process that data communication 20 further.
  • the PGW can also contact a separate identification server 120, which offers seamless identification in form of HSS or AAA. If the mobile entity 10 has a user, who is not registered in the AAA or the HSS, a portal can be opened via the internet or inside of the identification server 120 to give the user the possibility for a separate billing and the respective entering of information for that billing process.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (11)

  1. Procédé d'établissement d'une communication de données (20) entre une entité mobile (10) et Internet via un point d'accès Wi-Fi (AP) avec un raccordement à un réseau mobile (100), comprenant les étapes consistant à :
    - offrir une identification d'ensemble de services (SSID) sous la forme d'une identification d'ensemble de services à valeur ajoutée (VAS-SSID) par le point d'accès Wi-Fi (AP),
    - connecter l'entité mobile (10) au point d'accès Wi-Fi (AP) en sélectionnant l'identification d'ensemble de services à valeur ajoutée (VAS-SSID) du point d'accès Wi-Fi (AP),
    - acheminer une communication de données (20) du point d'accès Wi-Fi (AP) via le réseau mobile (100) à une passerelle de desserte (SGW) du réseau mobile (100) en utilisant un nom de point d'accès (APN) spécifique à l'identification d'ensemble de services (SSID) sélectionnée,
    caractérisé par les étapes suivantes :
    - l'acheminement de la communication de données (20) de la passerelle de desserte (SGW) directement à la passerelle de données par paquets évoluée PDN (PePDG) qui est directement accessible depuis la passerelle de desserte (SGW) via des interfaces standard en utilisant une communication située intérieurement au sein du réseau mobile,
    - l'acheminement de la communication de données (20) de la passerelle de données par paquets évoluée PDN (PePDG) à Internet (200).
  2. Procédé selon la revendication 1, caractérisé en ce que la communication de données (20) est établie sous la forme d'une communication critique de sécurité et/ou sous la forme d'une communication critique temporelle, en particulier sous la forme d'une communication vocale sur IP.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la passerelle de service (SGW) comprend une liste d'informations à acheminer (30) sur la base du nom du point d'accès (APN).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'étape de connexion de l'entité mobile (10) au point d'accès Wi-Fi (AP) en sélectionnant l'identification d'ensemble de services à valeur ajoutée (VAS-SSID) du point d'accès Wi-Fi (AP) est effectuée automatiquement par l'entité mobile (10).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'étape de connexion de l'entité mobile (10) au point d'accès Wi-Fi (AP) en sélectionnant l'identification d'ensemble de services à valeur ajoutée (VAS-SSID) du point d'accès Wi-Fi (AP) est effectuée manuellement sous la forme d'une sélection de l'utilisateur sur l'entité mobile (10).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la communication de données (20) est acheminée de la passerelle par paquets évoluée PDN (PePDG) à un serveur d'identification (120) pour identifier l'identité mobile (10) et/ou l'utilisateur de l'entité mobile (10).
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le point d'accès Wi-Fi (AP) offre au moins une identification d'ensemble de services supplémentaire (SSID), en particulier au moins l'une des suivantes :
    - identification d'ensemble de services communautaire (C-SSID)
    - identification d'ensemble de services d'Internet (I-SSID).
  8. Procédé selon la revendication 7, caractérisé en ce que la communication de données (20) est acheminée d'une passerelle par paquets évoluée PDN (PePDG) et/ou d'une passerelle de réseau de données par paquets (PGW) à un serveur d'identification spécifique (120) pour identifier l'entité mobile (10) et/ou l'utilisateur de l'entité mobile (10) sur la base de l'identification d'ensemble de services sélectionnée (SSID).
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le point d'accès Wi-Fi (AP) est connecté en continu au réseau mobile (100).
  10. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le point d'accès Wi-Fi (AP) se connecte au réseau mobile (100) à la demande après qu'une entité mobile (10) s'est connectée au point d'accès Wi-Fi (AP).
  11. Système de réseau (300) comprenant un réseau mobile (100) pour le raccordement d'un point d'accès Wi-Fi (AP) en particulier en utilisant un procédé selon les revendications 1 à 10, dans lequel le réseau mobile (100) comprend une passerelle de desserte (SGW) pour recevoir une communication de données (20) du point d'accès Wi-Fi (AP) et d'une passerelle de données par paquets évoluée PDN (PePDG) en communication directe avec la passerelle de desserte (SGW) pour recevoir la communication de données (20) directement de la passerelle de desserte (SGW) et acheminer la communication de données (20) à Internet (200).
EP15157585.9A 2015-03-04 2015-03-04 Procédé et système d'établissement d'une communication de données entre une entité mobile et internet Active EP3065498B1 (fr)

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US10205507B2 (en) * 2015-08-28 2019-02-12 Tejas Networks, Ltd. Relay architecture, relay node, and relay method thereof
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